Home / 389,107.20-583,207.20-178,766.40

Finding the Fourth Proportional to 389,107.20, 583,207.20 and 178,766.40

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Solution

The fourth proportional to 389,107.20, 583,207.20 and 178,766.40 is: 267,941.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,107.20 : 583,207.20 = 178,766.40 : x
  2. Step 2: Convert to fraction form
    389,107.20/583,207.20 = 178,766.40/x
  3. Step 3: Cross multiply
    389,107.20x = 583,207.20 × 178,766.40
  4. Step 4: Simplify right side
    389,107.20x = 104,257,851,598.08
  5. Step 5: Solve for x
    x = 104,257,851,598.08/389,107.20
  6. Step 6: Final answer
    x = 267,941.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.